@article{ParkLuehrStolleetal.2015,
  author    = {J. Park and H. Luehr and Claudia Stolle and G. Malhotra and J. B. H. Baker and Stephan Buchert and R. Gill},
  title     = {Estimating along-track plasma drift speed from electron density measurements by the three Swarm satellites},
  journal   = {Annales geophysicae},
  volume    = {33},
  number    = {7},
  pages     = {829 -- 835},
  doi       = {10.5194/angeo-33-829-2015},
  year      = {2015},
}